Combined phonograph and radio receiving set



July 16, 1929. z ECKELBARGER 1,720,949

COMBINEDPHONOGRAPH AND RADIO RECEIVING SET Filed Oct. 31, 1925 3Sheets-Sheet 1 July 16, 1929. 2. ECKELBARGER COMBINED PHONOGRAPH ANDRADIO RECEIVING SET Filed 001;. 31, 1925 3 Sheets-Sheet 2 hum In Maiafor.

Jul 16, 1929.

2. ECKELBARGER COMBINED PHONOGRAPH AIID RADIO RECEIVING SET 1925 5Shgets-Sheet 3 Filed Oct. 31

Patented July 16, 1929..

UNIGTEDYFSTATES ZENA IEG'KELBARGER, 0F GOSHEN, INDIANA.

GOMBINED PHONOGRAPH AND RADIO RECEIVING SET.

Application filed October 31, 1.925. Serial No. 66,072.

This invention has for its object to provide a combined phonograph andradio receiving set including the usual loud speaker unit which'ischaracterized by the promsion of a novel type of horn having severalinlet branches connected, respectively, with the phonograph sound boxand the loud speaker unit of the radio receiving set, whereby theoperator may, as occasion or preference may dictat operate either thespeaker unit of the r60 set or the phono graph.

-A further object is to provide means for alternately opening andclosing the passage through the branches of, the horn so as to confinethe sound emanating from the loud speaker unit or the sound box,according to which is in use, and thereby insure its delivery to theoutlet of the horn without sacrifice of volume or quality of tone.

A further object is the provision of a conveniently operable device forcontrolling the adjustment of the means for opening and closing thebranches of the horn, said devicehaving associated therewith a circuitcontroller interposed in the circuit of the loud speaker unit so thatupon opening of v the passage through the branch of the horn whichcommunicates with the loud speaker nnit, the circuit controller isclosed, whereas when the control device is adjusted to close the lastmentioned branch the circuit controller is open so as to interrupt-theoperation of the loud speaker unit.

' ment of the movable parts of the invention Still further objects ofthe invention are the provision of means for eflectively dampening orabsorbing such vibratory moveas would have an undesirable effect on thereproduction of sound, and also the provision of numerous other novelfeatures of zonstruction and arrangement tending to render the combinedradio receiving set and phonograph more eflicient, compact andconvenient to manipulate.

In the accompanying drawing, Figure 1 is a front elevation of theinvention, the

- door of the radio compartment and the lid of the phonographcompartment being open;

Figure 2 is a top plan view of the cabinet partly broken away and partlyin section showing the improved horn and the control device for the hornvalves and the switch of the speaker unit;

Figure 3 is a section on the line 33 of Fig. 2; 0 Figure 4 is anenlarged fragmentary elevation of the horn showing the point ofJHIIClDlIIG between the branches thereof;

Figure 5 is a sectional view on the line 5-5 of Fig. 2;

Figure 6 is a detail sectional view through one of the valves in abranch of the horn;

Figures 7 and 8 are enlarged details illustrating the connectionsbetween the control lever and the switch and the control lever and thevalves.

Referring to the drawing in detail, the numeral 1 indicates a cabinetpreferably constructed along artistic lines so as to enhance itsappearance and in which are provided compartments 2 and 3, thecompartment 2 having a door 1 therein and the compartment 3 having anopen top adapted to be closed by a hinged lid 5.

Within the compartment 2 there is arranged a preferred type of radioreceiving set 6 having jacks 7 adapted to receive the usual plug 8,whereby the various stages of the radio or audio frequency amplificationmay be plugged in as desired. The wires or conductors 9 and 10 connectedwith the plug 8 are extended into the compartment 3, the conductor 9being directed as at 11 with one terminal of the loud speaker unit -12and the other conductor 10 being connect-ed with one pole 13 of a'doublepole switch designated generally at 14 which is suitably mounted on awall of the compartment 3. A conductor 15- is connected with the otherpole of the loud speaker unit 12. The movable blades 17 of the switchare pivotally mounted at 18 and are adapted to be actuated in a mannerto be hereinafter described to bridge the conductors 10 and 15 and thusclose the circuit from the plug 8 to the loud speaker unit 12 Anapproved type of phonograph designated generally at 19 and indicated indotted lines in Fig. 3 is located in the upper portion of thecompartment 3 and includes the usual revolving table 20 and sound box 21connected with the hollow extension 22 through which sound emanatingfrom the sound box 21 is conducted.

The relatively large open end of a born 23 is located behind an opening24 provided in the front of the cabinet 1 so as to give direction andvolume to the sound produced by the loud speaker unit 12 or the soundbox 21 according to which is in use. The relatively small rear end ofthe horn is provided with a relatively wide vertical bend 24 which isdivided at the point 25 into two branches 26 and 27, the branch 26extending vertically and having the horizontally movable tone arm 28swivelly mounted thereon, to which arm the extension 22 of the sound box21 is suitably connected. The branch is connected with the branch 26 atsuch angle as to produce a stream-line effect so as to gradually changethe direction of movement of the sound waves passing thuough the branch27 and entering the bent rear portion 24 of the horn.

The branch 27 is gradually reduced in diameter from the point ofjuncture 25 to its opposite end which latter is connected with the loudspeaker unit 12, the intermediate portion of the branch being providedwith a bend 27 enclosing the lower leg thereof at an inclniatlon to thevertical and also disposing the loud speaker unit 12' m the lowerportion of the compartment 3.

At points adjacent the juncture 25 the branches 26 and 27 rotatablyreceive diametrically disposed shafts 28 and 29, respectively, on whichare mounted disk-like sound control valves and 31. In order to dampcnand absorb such sound as might be produced by vibration of the shafts 28and 29 and the valves 30 and 31, said shafts are in bearings 32 formedof felt orjournaled similar material and the valves are faced with asimilar material. on both sides as indicated at 33.

The shafts 28 and 29 are provided with arms 3-1 and 35 which areconnected with a link 36, gaskets formed of felt or other soft material37 being interposed between the link 36 and said arms, whereby'toprevent relative vibratory movement of these parts. The arm 35 isprovided with an extension 38 which is connected with the adjacent endof a flexible actuating member 39. The opposite extremities of' theactuating member 39 is connected with an operating or control lever 40pivotally mounted at 41 in the compartment 3 and provided at itsopposite end with' a handle 42 conveniently located-for manualmanipulation. The medial portion of the flexible member 39 passedthrough a guide 43 partially supported by an arm 44 mounted on the hornbranch 27. The end of the flexiblemember 39 passes through an apertureprovided in the head 45 of a connecting pin 46 which latter passesthrough the control lever 40 and is spring pressed to preventobjectionable vibratory movement thereof by an expansion spring 47confined between the lever 40 and an abutment 48. The flexible member 39is held in adjusted position in the head 45 by a set screw 49.

The blades 17 of the switch 14 are conthe compartment 3 until it'is innected with and actuated by the lever 40 through a connecting rod 50connected at 51 with the blades 17, and at its opposite end with a pin52held against vibratory movement on the lever 40 by a spring 53 insubstantially the same manner as the pin 46.

As will'be found by reference to Fig. 4 the valves 30 and 31 are soarranged on their shafts 28 and 29 that. when the valve 30 is closed, asshown in Fig. 4, the valve 31 is open, whereas, when the lever 40 1Smoved forwardly to the position shown in Fig. 5,

the shafts 28 and 29 are actuated so as topulled out and the circuit ofthe loud speaker unit is thus interrupted. On the other hand, when thelever 40 is moved rearwardly the valves are moved to the position shownin F 4 and the switch blades 17 being, moved rearwardly by the rod 50close the circuit of the loud speaker unit 12 and the latter is set inoperation provided, of course, the plug 8 is inserted in a jack 7 andthe radio set 6 is properly in tune with a broadcasting station. Theprovision and location of the valves 30 and 31 insures maximum quantityand quality of tone pro duced by either the phonograph or the radio setand the construction and arrangement of the'branches of the hornenhances these desirable results.

The horn structure including the horn body 23 and the branches 26 and 27thereof are preferably constructed of metal and it is supported in itsentirety in the compartment 3 on a post 55 by brackets 56 slidablymounted on post 55 and held in position thereon by set screws 57. Thelower bracket 56 rests upon a sleeve 58 having its lower terminalthreaded and receiving a tubular nut 59 secured upon the post 55,whereby upon rotation of the tubular member 58, after loosening setscrews 57, the entire horn structure may be moved vertically within adesired position. Thereafter the horn is secured in place by tighteningthe set, screws 57 I claim:

1. In combination, a radio receiving set including a circuit and aloud-speaker unit interposed in said circuit, a switch also interposedin said circuit, a phonograph including a sound-box, a horn, a pluralityof branches connected with said horn and connected with the loud-speakerunit and the sound-box, sound control valves located in said branches,a. control lever, adjustable means connecting the control lever wit-hthe valves for simultaneously actuating the latter. and mechanical meansfor actuating said switch.

2. In combination, a radio receiving set including a circuit and aloud-speaker unit interposed in said circuit, a switch also interposedin said circuit, a phonograph including a sound box, a horn, a pluralityof branches connected with said horn and connected with the loud-speakerunit and the sound-box, tiltable sound control valves located in saidhorn branches, a control levergn'icans ctmnecting the control lever withthe valves for simultaneously actuating the latter, and mechanicalswitch actuating means connected with said lever.

3. In combination, a radio receiving set including a circuit and aloudspeaker unit interposed in said circuit, a switch also intel-posedin said eil'cu'it, a phonograph in cluding a sound-box, a horn, a pairof branches connected with said horn and connected with the loud speakerunit and the sound-box, a tiltalole sound control valve located in eachof said horn branches, link age Connecting: said valves eXt-eriorly ofthe horn branches to synchronize the valve movement. a control lever,means connecting the control lever with said valve linkage forsimultaneously actuating said valves, and linkage connecting said switchand control lever for actuating the former.

Iirwitness whereof I have hereunto affixed my signature this 29th day ofOctober, 1925.

ZENA ECKELBARGER.

